如何显示服务器端生成的JavaScript PDF流通过HttpMessageResponse内容发送

问题描述

在我的服务器端我使用ASP.NET MVC的Web的API，我在哪里产生与Crystal报表PDF文件并将其导出为PDF格式。在code去如下：

On my server side I am using ASP.NET MVC Web Api, where I am generating the PDF file with Crystal report and exporting it to PDF format. The code goes as follows:

[HttpPost]
public HttpResponseMessage SetReport(string name, [FromBody]List<KontoDto> konta)
{
            var response = Request.CreateResponse(HttpStatusCode.OK);
            var strReportName = "KontoReport.rpt";
            var rd = new ReportDocument();
            string strPath = HttpContext.Current.Server.MapPath("~/") + "Reports//" + strReportName;
            rd.Load(strPath);
            rd.SetDataSource(konta);
            var tip = ExportFormatType.PortableDocFormat;
            var pdf = rd.ExportToStream(tip);
           response.Headers.Clear();
            response.Content = new StreamContent(pdf);
            response.Content.Headers.ContentType = new MediaTypeHeaderValue("application/pdf");
            return response;

}

我的JavaScript code是：

My Javascript code is:

  $scope.xxprint = function () {
        console.log($scope.konta);
        $http.post('/api/konto/setReport/pdf', $scope.konta, { responseType: 'arraybuffer' })
            .success(function (data) {
                 var file = new Blob([data], { type: 'application/pdf' });
                var fileURL = URL.createObjectURL(file);
                window.open(fileURL);
            });
    };

这根本不​​起作用。我不知道有什么不对的code。我得到的浏览器中打开PDF浏览器，但它是空的。此外，创建的P​​DF正确地创建，我可以将它保存到磁盘，然后打开它，然后使用Adobe Acrobat查看。该型Htt presponseMessage的内容似乎也是正确的通过的提琴手观察。见图片：

This simply does not work. I don't know what's wrong with this code. I get the browser to open the pdf viewer, but it is empty. Also, the created pdf is correctly created as I can save it to disk and open it then with Adobe Acrobat viewer. The content of the HttpResponseMessage seems also correct viewed via Fiddler. See image:

推荐答案

好像我做它正确的所有时间。问题是我angularjs版（V1.08）。当升级到V1.2一切工作正常。在V1.08的的responseType：arraybuffer paramater（这是我在做什么重要的）是简单地通过angularjs忽略。这似乎是实现为V.1.1的。见这太问题：How在一个ArrayBuffer AngularJS读取二进制数据？

Seems I did it correctly all the time. The problem was with my angularjs version (v1.08). When upgrading to v1.2 everything worked ok. In v1.08 the responseType: 'arraybuffer' paramater (which is crucial to what I was doing) was simply ignored by angularjs. It seems to be implemented as of v.1.1. See this SO question: How to read binary data in AngularJS in an ArrayBuffer?

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